She's acting up....

speedworks · 02-26-2010, 07:07 AM

^^^ Guys, I don't use the SRM - it is always off, so these explanations aren't in line with the situation. Also, this happens when the car is in gear already, not in neutral, or not in a position where any shifting is about to happen. It happens in gear, at fast speeds around turns. Definately a problem, they recognized that, but don't have a solution. What was interesting is when I did it with the tech in the car, and then put my foot in the clutch (no movement of the shifter), it moved the rpms to 4500, when at the time I was probably at around 4100-4200.

Those of you who noticed it in an autocross, take a long sweeping on/off ramp, at speed, in a single gear, take your foot off the gas (at the point you need to because you are bringing a lot of speed into the turn), and then you will feel the problem -feels like the gas is still on (steady, not increasing).

KingZee · 03-02-2010, 04:03 PM

I've had the car for a little over a month and have about 1600 miles on it. I've just started to push it after break-in and I noticed this for the first time yesterday going onto an on-ramp. I have the base model, no sports package, no sync rev, so that takes out sync rev as the culprit.

I was approaching the on ramp pretty fast in 3rd, I rev-matched and put it into second at about 4k rmp (possibly higher), the car was in gear before I took the turn and noticed it's not engine breaking for s***! I almost went into the f'ing curb and if I wasn't somewhat experienced I probably would have.

This being a heavy flywheel issue SOMEWHAT makes sense from the way it felt. Like the flywheel was spinning and because it's heavy its momentum kept carrying the gear? F! I don't f'in know.

speedworks · 03-03-2010, 09:44 PM

That's it. I would suspect quite a few people have it, they just haven't put the car into the situation. Please take it to the dealer, so there are more complaints to the problem. They supposedly give a case number by customer name (pm me if you want my name to reference). Obviously, they haven't come back with a solution yet.

labk888 · 03-03-2010, 10:48 PM

Quote:

Originally Posted by speedworks

That's it. I would suspect quite a few people have it, they just haven't put the car into the situation. Please take it to the dealer, so there are more complaints to the problem. They supposedly give a case number by customer name (pm me if you want my name to reference). Obviously, they haven't come back with a solution yet.

This is a cause of major concern for me as I was planning on picking a Z this weekend. Do you guys feel that the issues you are seeing are an isolated problem (lemon vehicle) or a general engineering problem that all cars have? Someone in this thread mentioned that this is happening to
their 1 month old car, which I presume is a 2010.

SoCal 370Z · 03-03-2010, 11:14 PM

Quote:

Originally Posted by labk888

Do you guys feel that the issues you are seeing are an isolated problem (lemon vehicle) or a general engineering problem that all cars have?

The issue has gone on record with Nissan, as mentioned by one of the posting members in this thread. Given the advent of the Toyota's issues, it is (hopefully) unlikely that Nissan will not act on this if it is a problem. The final decision of buying the Z is up to you. You will be getting a lot of automobile for your money if you buy one.

All vehicles have issues, and all manufacturers address them in different ways. This issue sounds serious enough to warrant Nissan doing something as the car is not entering into a limp mode in what Nissan is essentially saying is a fail-safe measure—it is doing something out of the ordinary (unless, Nissan states that engine braking is not ordinary...pretty damn hard to do in the enthusiast world).

Rep point to speedworks!

onekneedown · 03-06-2010, 01:18 PM

Quote:

Originally Posted by KingZee

I was approaching the on ramp pretty fast in 3rd, I rev-matched and put it into second at about 4k rmp (possibly higher), the car was in gear before I took the turn and noticed it's not engine breaking for s***! I almost went into the f'ing curb and if I wasn't somewhat experienced I probably would have.

:

This is a question not a comment: When you match the revs when you down shift either with SRM or manually, would that reduce some of the engine braking?

speedworks · 03-06-2010, 02:56 PM

Quote:

Originally Posted by onekneedown

This is a question not a comment: When you match the revs when you down shift either with SRM or manually, would that reduce some of the engine braking?

I'm not exactly sure what you are asking, but if you downshift, and match the revs, yes 'engine braking' will occur. If you don't exactly match it, and maybe release the clutch at a lower rpm, then you will get that jerk feeling, and a little more initial 'engine braking' until the engine/rpms catch up to the proper rpm for that gear, and then you get the normal amount of 'engine braking'. Does that answer it?

03-02-2010, 04:03 PM	#2 (permalink)
KingZee A True Z Fanatic Join Date: Feb 2010 Location: Glendale, CA Age: 43 Posts: 2,612 Drives: Focus ST Rep Power: 425	I've had the car for a little over a month and have about 1600 miles on it. I've just started to push it after break-in and I noticed this for the first time yesterday going onto an on-ramp. I have the base model, no sports package, no sync rev, so that takes out sync rev as the culprit. I was approaching the on ramp pretty fast in 3rd, I rev-matched and put it into second at about 4k rmp (possibly higher), the car was in gear before I took the turn and noticed it's not engine breaking for s**! I almost went into the f'ing curb and if I wasn't somewhat experienced I probably would have. This being a heavy flywheel issue SOMEWHAT makes sense from the way it felt. Like the flywheel was spinning and because it's heavy its momentum kept carrying the gear? F! I don't f'in know. Last edited by KingZee; 03-02-2010 at 04:10 PM.*

02-26-2010, 07:07 AM	#1 (permalink)
speedworks Track Member Join Date: Jan 2009 Location: Boston, MA Posts: 550 Drives: PW purchased 01/09 Rep Power: 19	^^^ Guys, I don't use the SRM - it is always off, so these explanations aren't in line with the situation. Also, this happens when the car is in gear already, not in neutral, or not in a position where any shifting is about to happen. It happens in gear, at fast speeds around turns. Definately a problem, they recognized that, but don't have a solution. What was interesting is when I did it with the tech in the car, and then put my foot in the clutch (no movement of the shifter), it moved the rpms to 4500, when at the time I was probably at around 4100-4200. Those of you who noticed it in an autocross, take a long sweeping on/off ramp, at speed, in a single gear, take your foot off the gas (at the point you need to because you are bringing a lot of speed into the turn), and then you will feel the problem -feels like the gas is still on (steady, not increasing).

03-03-2010, 09:44 PM	#3 (permalink)
speedworks Track Member Join Date: Jan 2009 Location: Boston, MA Posts: 550 Drives: PW purchased 01/09 Rep Power: 19	That's it. I would suspect quite a few people have it, they just haven't put the car into the situation. Please take it to the dealer, so there are more complaints to the problem. They supposedly give a case number by customer name (pm me if you want my name to reference). Obviously, they haven't come back with a solution yet.